EP0945778A3 - Low power CD-ROM player for portable computers - Google Patents

Low power CD-ROM player for portable computers Download PDF

Info

Publication number
EP0945778A3
EP0945778A3 EP99301798A EP99301798A EP0945778A3 EP 0945778 A3 EP0945778 A3 EP 0945778A3 EP 99301798 A EP99301798 A EP 99301798A EP 99301798 A EP99301798 A EP 99301798A EP 0945778 A3 EP0945778 A3 EP 0945778A3
Authority
EP
European Patent Office
Prior art keywords
audio
rom
rom drive
subsystem
interface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99301798A
Other languages
German (de)
French (fr)
Other versions
EP0945778A2 (en
EP0945778B1 (en
Inventor
Reginia Chan
Sterling Du
James Lam
Aaron Reynoso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
O2Micro International Ltd
Original Assignee
O2Micro International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by O2Micro International Ltd filed Critical O2Micro International Ltd
Publication of EP0945778A2 publication Critical patent/EP0945778A2/en
Publication of EP0945778A3 publication Critical patent/EP0945778A3/en
Application granted granted Critical
Publication of EP0945778B1 publication Critical patent/EP0945778B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3256—Power saving in optical drive
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

A computer subsystem of a computer includes a CPU (120), RAM, display (110), storage device (114), input device(s), and a digital-audio generating IC (130). A CD-ROM subsystem of the computer includes a CD-ROM drive (138) and CD-ROM control buttons (142) for controlling CD-ROM drive's operation while playing audio CDs. An audio-interface IC (102) of the CD-ROM subsystem couples a bus of the computer subsystem to the CD-ROM drive, and to the control buttons. The audio-interface IC, in one operating mode, relays commands and data between the bus and the CD-ROM drive. A second operating mode permits turning the computer subsystem off while the audio-interface IC autonomously responds to the control buttons and transmits commands to the CD-ROM drive for playing an audio CD.
EP99301798.7A 1998-03-26 1999-03-10 Low power CD-ROM player for portable computers Expired - Lifetime EP0945778B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US136207 1993-10-15
US7950898P 1998-03-26 1998-03-26
US79508P 1998-03-26
US09/136,207 US6226237B1 (en) 1998-03-26 1998-08-19 Low power CD-ROM player for portable computer

Publications (3)

Publication Number Publication Date
EP0945778A2 EP0945778A2 (en) 1999-09-29
EP0945778A3 true EP0945778A3 (en) 2003-10-08
EP0945778B1 EP0945778B1 (en) 2013-06-26

Family

ID=26762091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99301798.7A Expired - Lifetime EP0945778B1 (en) 1998-03-26 1999-03-10 Low power CD-ROM player for portable computers

Country Status (5)

Country Link
US (3) US6226237B1 (en)
EP (1) EP0945778B1 (en)
JP (1) JP3742835B2 (en)
CN (1) CN1178118C (en)
TW (1) TW432275B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7890741B2 (en) 2000-12-01 2011-02-15 O2Micro International Limited Low power digital audio decoding/playing system for computing devices

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Also Published As

Publication number Publication date
JP2000035836A (en) 2000-02-02
EP0945778A2 (en) 1999-09-29
CN1178118C (en) 2004-12-01
US6711631B1 (en) 2004-03-23
US6226237B1 (en) 2001-05-01
EP0945778B1 (en) 2013-06-26
US20040181616A1 (en) 2004-09-16
CN1230711A (en) 1999-10-06
TW432275B (en) 2001-05-01
US7243168B2 (en) 2007-07-10
JP3742835B2 (en) 2006-02-08

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